(1) integrates the powerful hardware resources of computers, breaks through the limitations of traditional instruments in data processing, display and storage, and greatly enhances the functions of traditional instruments. High-performance processor, high-resolution display and large-capacity hard disk have become the standard configuration of virtual instruments.
(2) Using the abundant software resources of the computer, the software of some instrument hardware is realized, which saves material resources and increases the flexibility of the system; Through software technology and corresponding numerical algorithm, the test data is analyzed and processed in real time and intuitively; Through the graphical user community
GUI technology, truly friendly interface, human-computer interaction.
(3) Based on computer bus and modular instrument bus, instrument cards are modularized and serialized, which greatly reduces the volume of the system and facilitates the construction of modular instruments.
(4) Based on computer network technology and interface technology, VI system has convenient and flexible connectivity, and widely supports various industrial bus standards such as CAN, FieldBus and PROFIBUS. Therefore, using virtual instrument technology can easily build an automatic test system and realize the networking of measurement and control process.
(5) Open standard architecture based on computer. The hardware and software of virtual instrument are characterized by openness, modularity, reusability and interchangeability. Therefore, users can choose products from different manufacturers according to their own needs, which makes the development of instrument system more flexible and efficient and shortens the time of system establishment.
What are the advantages of virtual instruments compared with traditional instruments in physical experiments? Can the instrument still be virtual? The instruments we saw before are all physical objects, and we use them. How do we use them for virtual things? What is a virtual instrument?
Virtual instruments rely on standard buses such as VXI and PXI, and use drivers to make computers have the ability to control physical instruments and equipment. Virtual instrument represents a fundamental change from the traditional hardware-based test system to the software-centered test system. Maybe you are not familiar with the concept of driver, so I will explain it here. The application of computer in the field of testing and automation gave birth to the concept of instrument "driver", also known as driver. Instrument driver is a software intermediate layer between computer and instrument hardware equipment, which consists of function library, utility program and tool suite, and is the general name of a series of software code modules. It resides in the computer and is the bridge and link between the computer and the instrument.
What are the advantages of virtual instruments compared with traditional instruments?
First, high performance.
Virtual instrument technology is developed on the basis of PC technology, so it completely "inherits" the advantages of the latest commercial technology dominated by ready-to-use PC technology, including excellent processor and file I/O, so that you can import data to disk at high speed and perform complex analysis in real time. In addition, the continuous development of Internet and faster and faster computer network make virtual instrument technology show its more powerful advantages.
Second, it has strong expansibility.
Ni's software and hardware tools make engineers and scientists no longer limited to the current technology. Because of the flexibility of NI software, you only need to update your computer or measuring hardware, and you can improve your whole system with minimal hardware investment and little or no software upgrade. When using the latest technologies, you can integrate them into existing measuring equipment, and finally speed up the time to market with less cost.
Third, the development time is short.
NI's efficient software architecture can be combined with the latest technologies in the fields of computers, instruments and communication at the driving and application levels. The original intention of NI to design this software architecture is to facilitate the operation of users, and at the same time, it also provides flexibility and powerful functions, so that you can easily configure, create, publish, maintain and modify high-performance and low-cost measurement and control solutions.
Fourth, seamless integration.
Virtual instrument technology is essentially a comprehensive concept of software and hardware. As products become more and more complex in function, engineers usually need to integrate multiple measuring devices to meet the complete test requirements, and it always takes a lot of time to connect and integrate these different devices. NI's virtual instrument software platform provides a standard interface for all I/O devices, helping users to easily integrate multiple measuring devices into a system, thus reducing the complexity of the task.
Virtual instrument technology has become the mainstream technology in testing, industrial I/O, control and product design. With the continuous improvement of function and performance, virtual instrument technology has become the main substitute of traditional instruments. With the further update of PC, semiconductor and software functions, the development of virtual instrument technology in the future will provide an excellent model for the design of test system and give engineers powerful functions and flexibility in measurement and control.
Virtual instrument is to use the powerful function of computer to put the data processing function and display function of the instrument into the computer and realize it through related software.
1, energy saving
2, not afraid of damage, low cost
3, you can experiment boldly, not afraid of accidents.
4. Harmless accidents
What is the difference between traditional instrument and virtual instrument in composition? Virtual instrument is the core of instrument.
Traditional instruments are instruments with hardware as the core;
Programming of virtual instrument+computer+signal acquisition device.
Virtual instrument technology is to use high-performance modular hardware, combined with high efficiency and flexibility to complete various testing, measurement and automation applications. Since the advent of 1986, engineers and scientists all over the world have used NI LabVIEW graphical development tools in all aspects of product design cycle, thus improving product quality, shortening time to market and improving product development and production efficiency. Using the signal connection between the integrated virtual instrument environment and the real world, analyzing the data to obtain practical information and enjoying the information results will help to improve the production efficiency on a large scale. The tools provided by virtual instrument can meet the needs of any project.
What's the difference between virtual instrument and traditional instrument? Virtual instrument means that the display interface is completely replaced by software, and the front end is the same as the traditional instrument.
Is virtual instrument the same as EDA? Of course not. The main programming language of virtual instrument is LabVIEW, while the main programming language of EDA is Verilog HDL.
And these two objects and functions are far apart. How can they be the same?
What manufacturers are making virtual instruments now? Ni company is abroad, and Yinhe Electric Appliance is at home.